MIAMI LAKES, Fla. — First lady Michelle Obama told supporters she is fired up and urged them to "get it done in Florida," during a sweep through the state Tuesday.

Obama reminded volunteers a few thousand votes could make the difference in an extremely close election in the fall. The latest polls show her husband, President Barak Obama, with a narrow lead over Republican challenger Mitt Romney. And Florida is considered one of the top battleground states with 29 electoral college votes up for grabs.

Obama's trip marked her first official public campaign jaunt through Florida this year. She has come previously to promote her work as first lady and to attend private fundraisers.

Obama was in full campaign mode as she highlighted her husband's efforts to create more jobs before a packed audience at the Barbara Goleman Senior High School gym in the western Miami suburb of MiamiLakes. She also touted the president's signature health care law, which she emphasized has increased affordable, preventative care for many, as well eased access to contraception for women and enabled more than 6 million young adults to remain on their parents' health insurance.